Long term monitoring of bottom water and sea floor environments in off Otsuchi, Iwate.(1000m)

Fiscal Year

2013

Title

Long term monitoring of bottom water and sea floor environments in off Otsuchi, Iwate.(1000m)

Project and Theme

Project 3. Research on factors controlling open ocean benthopelagic ecosystem dynamics
Representative Organization: Japan Agency for Marine-Earth Science and Technology
Theme3. Long-term monitoring of the physic-chemical environment in fisheries grounds
Representative personShuichi Watanabe
OrganizationJapan Agency for Marine-Earth Science and Technology
DepartmentEastern Japan Marine Ecosystems Dynamics Project team

Research Information

Period and Interval
2012/08/14 - 2013/10/12
Research Area
39-19'9775N, 142-27'5189E, 998m in water depth
Category
Mooring system(Observation buoy)
Overview
Deployment of long term monitoring system.Continuation of the observation by the system that was deployed last year.

Overview of the Observation

Research Point Table
Point
NamePoint:Off Otsuchi
Coordinates39.332958,142.458648
RemarksMooring Point:998m in water depth
Research Point Map & Track Chart Map & Point List
Results and Future Plan
Physical and chemical data between 2012/8/14 and 2013/10/12 have obtained in 1 hour interval. 61 video images recorded between 2012/8/20 and 2013/10/14 have recovered. Each length was 3 minutes. 372 still images recorded between 2012/8/14 and 2013/2/16 have recorded.

Investigation Item and Data Acquisition

Investigation ItemData Acquisition
Mooring system (Observation bouy)Water temperature (1 hour interval)
Mooring system (Observation bouy)Salinity (1 hour interval)
Mooring system (Observation bouy)Water depth (1 hour interval)
Mooring system (Observation bouy)Turbidity (1 hour interval)
Mooring system (Observation bouy)Dissolved oxygen concentration (1 hour interval)
Mooring system (Observation bouy)Current direction and intensity (1 hour interval)
Mooring system (Observation bouy)Picture of sea floor (1 day interval)
Mooring system (Observation bouy)Movie of sea floor (3 minutes in 1 week interval)

Reference

Person in charge of Investigation

Representative personKazumasa Oguri
OrganizationJapan Agency for Marine-Earth Science and Technology
DepartmentEastern Japan Marine Ecosystems Dynamics Project team

Keywords

Fiscal Year2013
OrganizationJapan Agency for Marine-Earth Science and Technology
CategoryMooring system (Observation buoy)
Research AreaSouth Sanriku
DisciplineOcean physics -> Water temperature
Ocean physics -> Salinity
Ocean physics -> Ocean current / Tidal current (Current direction/Current speed)
Ocean physics -> Transparency / Turbidity
Ocean chemistry -> Salinity
Ocean chemistry -> Dissolved oxygen
Topography / Geology / Geophysics -> Seabed morphology